?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Nguyen%2C+Viet+Anh&rft.aulast=Nguyen&rft.aufirst=Viet+Anh&rft.issue=3&rft.volume=4&rft.date=2018&rft.issn=2377-2891&rft.atitle=An+online+question+and+answering+system+for+support+teacher-student+interaction+in+the+blended+learning+course&rft.title=International+Journal+of+Learning+and+Teaching&rft.pages=178-184&rft.genre=article